Collapsible core and chuck



June 21 1927. 1,633,263

L. A. MORELAND COLLAPSIBLE CORE AND CHUCK Filed Jan. 15. 1923 2 Sheets-Sheet 1 June 21, 1927. 1,633,263-

L. A. MORELAND c LLAPsIB-LE CORE AND CHUCK Filed JanfilS. 192s 2 Sheets-Sheet 2 7 W ATTORNEYS Patented June 21, 1927.

UNITED STATES 1,633,263 PATENT OFFICE.

LESTER A. MORELAND, OE TRENTON, NEW JERSEY, ASSIGNOR TO THE DE LASKI 8t THROPP CIRCULAR WOVEN TIRE COMPANY, OF TRENTON, .NEW JERSEY,

PORATION OF NEW JERSEY.

A COR- COLLAISIBLE CORE AND CHUCK.

Application fi1ed-J'anuary 13, 1923. Serial No. 612,415.

This invention relates to an improvement in collapsible cores and chucks therefor, clesigned to be used in the manufacture of tires. The device is particularly applicable to employment in connection with the manufacture of cord tires, or fabric tires having inextensible beads or edges.

An object of the invention consists in pr0- viding such a device in which one of the segments may be mechanically drawn inwardly in a radial direction and entirely removed from connection with the other segments, and in which one or more additional segments may be swung inwardly and entirely removed from connection with the remaining segments, in order to permit a very compact collapsing of the last named seg ments to facilitate the removal of the tire for vulcanization. It has been found that, in the case of many cores in which the several segments bear a hinged relation to each other, it is practically impossible to collapse the segmentssufiiciently to permit the removal of the tire, particularly in those 5 sizes where the cross section of the core is relatively large with respect to the diameter. My invention overcomes this drawback.

Another object consists'in providing certain improvements in the form, construction and arrangement of the several parts whereby the above named and other objects may be effectively attained.

A practical embodiment of the invention is represented in the accompanying drawings, in which Fig. 1 represents a face view of the core and chuck, partly broken away.

Fig. 2 represents a rear view of the same.

Fig. 3 represents an edge view of the'same.

Fig. 4 represents a section taken in the plane of the line IV-IV of Fig. 1, looking in the direction of the arrows.

Fig. 5 represents a detail section taken in the plane of the line VV of Fig. 2, looking in the direction of the arrows.

Fig. 6 represents a detail view illustrating, in full and dotted lines, the swinging movement of one of the removable segments.

Fig. 7 represents a detail view illustrating, in full and dotted lines, the collapsing movement of the segments which are not removable. V I

Fig. 8 represents a detailfview illustrating, infull and dotted lines, the radial'im ward movement of one of the removable se ments.

The spindle or drive shaft of a tire making machine is represented by 1 (Fig. 4), and it has a flanged collar 2 which is fixed thereon by a key 3 and a round nut 4.

The flange of the collar 2 has a pair of bolts 5 slidably carried in under-cut grooves 6 formed therein,-plates 7 being screwed to the under face of the flange for the purpose of preventing the bolts from slipping out of .on the spindle 1, as is clearly shown in Fig.

5. By reference to this same figure, it will also be observed that the nuts 11 are tapered to seat in correspondingly shaped recesses in the plate 9, in order better to secure the parts against any relative movement with respect to each other.

The" plate 9 has a bearing 12 formed on one-side in which is rotatably mounted one end of a screw 18. A collar 14 formed on the said screw, and a second collar 15, removably secured thereto, serve to clamp the screw 13 against longitudinal movement in the bearing 12. The other end of the screw 14 is threaded into a block 16 which, in turn, is fast to a slide 17 that is mounted for reciprocation in grooves 18 formed in the sides of the plate 9. A pair of gibs 19 (Fig. l) are screwed to the plate 9 to hold the slide 17 in position therein. The end of the screw 13 which protrudes beyond the bearing 12 is squared, as indicated at 20, for the reception of a socket wrench by which it may be manuallv operated.

From the immediately foregoing description, it will be seen that operation of the screw 13 by a ,socket wrench, or other suitable device, will move the block 16, and hence, the slide'17, in one direction or the other in the plate 9. j p

A pair of bushings 21, ,22 are tightly ffitted in holes formed in the slide '17, and

are adapted to receive the reduced ends of dowels 23, 24. The opposite ends of said dowels are also reduced and fitted in apertures formed in a tongue that is secured, by rivets 26 (Fig. 1) to a. pair of curved plates 27 that are likewise fastened to the sides of the inner portion of the core seg ment 28. The last named ends of the dowels 23, 24 project through the tongue 25 and are threaded for the reception of nuts 29' in order to clamp them firmly in engagementwith the tongue 25. The fact that both ends of both dowels are reduced serves to provide shoulders which bear upon the bushings 21, 22 and the tongue 25, so as to hold the core segment 28 in a predetermined space relation with respect to the slide 17, as clearly shown in Fig. 4. This construction provides means for removably connecting the core segment 28 to the slide 17, since the dowels 23, 24 are always fast to the said segment, and it is only necessary to enter their free ends into the bushings 21, 22 in order to establish the connection just mentioned. \Vhen the said parts are connected, rotation of the screw 13 will, of course, serve to slide the segment 28 inwardly or outwardly in a radial direction, as the case may be.

The chuck plate 9 has a member 30 formed integrally therewith and projecting from the plane thereof, as clearly shown in Fig. 4 so that the extremity of said member is offset from the plane of the plate 9 into the plane of the tongue 25 that is socured to the core segment 28. This mem ber 30 serves as a support for a fixed core segment 31 that is secured thereto by bolts 32.

A pair of curved plates 33 are riveted to each side of the inner part of the core segment 31 and have their inner edges let into the member 30, as illustrated in Fig. 4. These curved plates 33 project on one end of the core segment 31, and are bored to receiy e a bolt 34 which passes through the inner portion 35 of another core segment 36 so as to provide a pivot about which the segment 36 may swing toward and away from segment 31, as clearly shown in Fig. 7. A tongue and groove connection, represented generally by 37, serves to interlock the abutting ends of thesegments 31 and 36, and the said ends may also be surfaced with steel plates 38, if desired.

Another core segment 39 has a pair of curved plates 40 riveted to its inner por tion, and the ends of said platesprotrnde beyond the end of the segment and are provided with open bearings 41 which engage a pin 42 that is-fast in and projects from both sides of-the inner-portion of the core segment 31. This arrangement-enables the segment 39 to. be swung inwardly about the pin 42', as-.indieated in Figs 6', and then completely removed from engagement with the segment 31, provided the segment 28 has previously been removed.

A fifth core segment 43 is of the same form and construction as segment 39, and is similarly connected to segment 36 by means of curved plates 44, open bearings 45, and pin 46. Tongue and groove members 47,

'48 are also provided for the abutting ends of segments .31, 39 and 36, 43, as clearly shown in Fig. 1, and the said ends are also surfaced with steel plates 49, 50. Likewise the abutting ends of segments 28, 39 and 43 have interlocking members 51, 52 and face plates 53, 54. As all these means for surfacing and interlocking the abutting ends of the core segments are somewhat conventional, they have been indicated and described in a general way. It may simply be added that the means for engaging the abutting edges of segments 31, 36, 39 and 4-3 are shaped so as to interlock upon the swinging movement of the said segments into abutting engagement with each other,

while the interlocking devices on the abutting edges of segments 28, 39 and 43 are adapted to take effect upon the outward sliding movement of the segment 28 with respect to the others.

In operation: Assuming the parts to be in the condition indicated in Fig. 1, and a tire to have been built upon the core, the screw 13 is actuated by asocket wrench, or the like so as to draw the segment 28 inwardly in a radial direction. When this segment has moved inwin'dly far enough to disengage the locking members 51, and substantially to clear the inner edge of the tire, it is bodily removed from the remainder of the apparatus by manually pulling it laterally and thereby disengaging the dowels 23, 24 from the bushings 21, 22. This inward movement is represented in Fig. 8.

Following the rcmo of the segment 28, the segments 39 and 43 are swung inwardly, one at a time, about their pivots 42 and 46, as clearly indicated in Fig. 6. as each of these segments reaches a position where it is substantially clear of the tire, it is bodily removed from the remainder of the appa ratus by slipping the plates 40 and 44 out of engagement with their pins and 46 respectively, he open bearings 41 and freely permitting this disengagement. The next step is to swing the segment 36 about the pivot 34 toward the segment 31, as shown in Fig. 7. hen this stage has been reached. the core has been so far disassembled andcolla-psed that its size is very greatly reduced and the tire I may readily he slipped therefrom and passed on to the remainin recesses. This se 'arationlof the tire from the core may be accomplished with very slightefiort, no matter what-the size; of tire belng ease, and this constitut s a point of substantial importance, since it is of the greatest consequence to avoid distortion of or injury to thetire in its green or unvulcanized condition. It may again be remarked that the arrangement of the parts is suchthat all the segments of the core are ofiset laterally into a plane far enough away from the plane of the outer face of the chuck plate 9, so that the collapsing of the core may take place without swinging or sliding any of the members in a plane at an angle to the plane of the core. When it is desired to re-establish the core in operative assembly for the purpose of building a tire thereon, it is only necessary to reverse the operations above described.

I11 cases where hand operations are to be performed on the tire subsequent to the action of the tire making machine, and it is deemed best to support the tire on a hand making stand or buck for these operations, it is only necessary to loosen the nuts 11 on the bolts 5, and slide the latter outwardly in the grooves 6 so as to cause them f to clear the plate 9. This permits the core and chuck, as a unit, to be separated from the collar 2 on the tire making machine shaft; whereupon the core and chuck may be mounted upon the shaft of a hand making stand or buck in substantially the same way that they were mounted upon the tire making machine shaft, since the shaft of the stand or buck is preferably provided with a collar and bolts, similar to the parts 2 and 5 above mentioned.

I desire it to be understood that various changes may be resorted to in the form, construction and arrangement of the several parts, Without departing from the spirit and scope of my invention; and that I do not intend to be limited to the details herein shown and described except as they may be set forth in the claims.

WVhat I claim is:

1. A collapsible core and chuck adapted for use in the manufacture of tires of relatively large cross section and with inextensible beads including, hinged segments, a

plurality of segments hinged to said firstnamed segments while in engagement with the tire but freely removable upon being swung in the plane of the core out of such engagement, a segment adapted to slide between said last named segments in the plane of the core for disengaging it from the tire and then to be removed from engagement these segments together forming approxi mately half of the core, a pair of smaller segments removably hinged each to one of the first named segments, a key-segment mounted to slide radially between said pair of small segments and freely removable in a substantially axial direction, and means located Without the plane of the core for supporting and radially moving said keysegment.

3. A device of the character described comprising, a core including a fixed segment, a segment hinged to said fixed segment, a pair of additional segments removably hing ed each to one of the said first named seg' ments and adapted to be swung in the plane of the core for disengagement from the tire and then to be removed from engagement with the other segments, a key-segment'slidable radially in the plane of the core for disengagement from the tire and freely removable in a substantially axial direction to permit the swinging and removal of the additional segments, and means located without the plane of the core for supporting and radially moving said key-segment.

In testimony, that I claim the foregoing as my invention, I have signed my name this 9th day of January 1923.

LESTER A. MORELAND. 

